Crossword Genius

Set of white pawns in chess, e.g. (5)

Ross

I believe the answer is:

octet

(Other definitions for octet that I've seen before include "Group of eight, say singers" , "A group of eight instruments or voices" , "Eight people together" , "Work for eight players" , "Group of eight musicians" .)

I've seen this clue in The New York Times.
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